Ink-well.



PATENTED JAN. 15, 1907.

G. J. SENGBUSGH.

INK WELL.

.. APPLICATION FILED MAR.31,1906.

OFFIQE- GUSTAV SENGBUSCH, MILWAUKEE, WISCONSIN. T

INK-WELL.

No. 841,3 L5.

Specification of Letters Patent. A ppl icatibn f lled l\C[ a1 h 31 S eIiel 369,161.

alrdly' leh dih 1 Patented Jan. 15, 1907.

vatioh of'the plunger, and Fig. 6 is a sectional detail of the" owr elid portien'of a mddifiedf 'oe'nstr'uction dfthe foiintaifi chamber;

W'ell; which is cupshap'edfand nlay b'fof any suitable shape arid'h'naterialf Preferablyht' 'is ihtefnallyeircular and the lower portion of the Weller ir'ik cavit'y "of reduced diameter, so as to be but littlelarger thaii theexteiio'r 0f the fountain-chamber; (designated at '23) The 'rim of the Thain body is eonv'ehiehtly' ext'ef ally threaded, as ihdieated at 3 ,"to "receive a tdp "cap "or elosufe" 4, correspond is 'pieferably of jhardiubler, and at the point where it bverlies the upper edge of the cap a sealing-ring 5}0f's0ft"rubhel;is inter posed. The cap isp'lo'ivided 'With a raised p'ftion 23', which is centrally depressed *a'nd centrally apertured, "as ihdicatediet 6,t6 form the upprpart of Edie-recess. The fbunta'ih chamber '2 "desirably takes the form of a; cylindric *lIieIhbH, provided at its upperside with a "centrally-"disposed"up stirldilig tu'bUla'I extension 7j,' the top wall 8, vsihieh unites the cylirid'ric sides off the main body Withthe lowerf elid of the 'thbulafeittehsioh, being upwardly inclihe'dbr'ebrii'calf The tdp eiid of'the 'ti'1bul2ireXtensi6h 7 is"'re cessedand iises'to an'd fits'areh n'd" the down turned portioh 2:4} which foflhs the perimetelfdf'the. aperture 6",t'h'1 1s serving to hold the fofifiteiIi-eh'amhei centered. TheloweTehd ofthe' founteih chaihher is paItiall'y closed By (tWasher-like member 9 the periphery "o'f which isfittedwithiri'tslightly undeicuft re cess '10, fdrmed inthe bottOm edge "of the IIii'n-ehanilderl c 'cly 'Thmembere is'pro-' V'ided "eh'trally With a relatively large o en: ihg 11, an ddesirably thishiemberislha'de 6f hard rubber '01 ether" slightly elastic material; so' thstt it"'In"a"y"be f0rced"'int0*t'he slightly ulidercut seat enc'ldetained'thele in with 'su'l'h eint security. Thisniehihr niayfif preferred", have sl'eW-threads *and be seated in''"coir'esp'dn'dihg threads 26; formed in the-"mailiehetmbef body, as s'ho'wn i'liflthe modification illiis't'rztted'in 'Fig'."6l "In 5 Ordef to support the ehialhber "semewhat In said drawings; 1 designates the main above the flat bettorh'of the Well, the *tnaem glass, "Whieh tests by gravity iipoh" the hot tively short cylinder of slightly less diameter than the interior of the cylindric portion of thefountain-chamber and which is provided with slightly convex upper and lower walls 16 and 17, respectively. The upper portion of the plunger takes the form of a tubular extension 18, which extends upwardly and fits easily within the tubular extension 7 of the fountain-chamber, the length of said extension 18 being such that when the float is elevated to its normal position its closed upper end 19 engages the downturned edge 24 of the top cap and seals the opening 6 through the latter. The main body '15 of the float is guided and centered in the chamher by means of a plurality of ribs 20 upon the interior of the fountain-chamber.

In order to provide for the flow of ink from the fountainchamber to the space above the upperv end of the plunger exten-.

sion, (when thelatter is depressed,) a pluralityof grooves 21 are formed within the interior of the extension 7, and to provide fora free overflow from the upper end of the extension 7 radially outward into the main body of the well lateral openings 22 are formed in the upper end of such extension 7. These openings conveniently take the form of notches formed in the extreme end of the extension, as best seen in Figs. 3 and 4.

It is to be noted that the upper ends of the grooves 21 are overhung by the flattened surface 24, which surrounds the dip-opening 6, so that said surface acts as a stop or deflector which prevents the ink from spurting upwardly through the dip-opening, especially when the float is depressed suddenly.

The operation of the device will be obvious, but may be briefly stated. The top cap having been removed and ink poured into the main chamber, it flows upwardly through the port and check-valve into the fountainchamber and balances the hydrostatic pressure inside and outside of the latter. When the cover is replaced, the upper end of the float, which is carried by the liquid in the chamber, engages the central portion of the cover and seals the dip-opening in the latter. If now a pen be inserted, it engages the upper end of the float and depresses the latter, thereby causing the ink to well up through the passages 21 and pour into the space left above the end of the float, the outflow through the bottom of the fountain-chamber being obviously prevented by the checkvalve. A surplus of ink will be forced into the dip-recess; but this will immediately overflowthrough the passages 22 back into the main chamber, and when the pen is withdrawn and'the' float freed to rise the hydrostatic pressure will cause the ink to flow through the check-valve into the fountainchamber and again equalize the pressure. These operations will of course be repeated each time a'pen is dipped into the well.

I claim 1Q An ink-well havinga mainchamber, a

closure forthe upper end thereof provided with "adip-opening, a fountain-chamber arranged within the main chamber and having communication with the lower part of the latter through a passage, a check-valve c'ontrollingsai'd passage, a tubular extension ris-' ing from the fountaimchamber to said top closure and at its upper end surrounding the dip-opening and having a passage aifording communication between the upper part of the mainchamber and the space normally occupied by the upper end of the float extension,

a float within the fountain-chamber having an upper extension rising, when the float is natant, to the dip-opening and closing the latter, and means forming a passage leading from the fountain-chamber to the dip-openin 2. An ink-well having a main chamber, a closure for the upper end thereof'provided with a dip-opening, a fountain-chamber arranged within the main chamber and having communication with the lower part of the latter through a passage, a check-valve con trolling said passage, a tubular extension rising from the fountainchamber to said top closure and at its upper end surrounding the dip-opening and having a passage affording communication between the upper'part of the main chamber and the space normally occupied by the upper end of the float extension, a float within the fountain-chamber having an upper extension rising, when the float is natant, to the dip-opening and closing the latter, and means forming a passage leading from thefountaiinchamber to the dip-opening and a deflector-stop arranged to overhang the delivery end of said passage.

3. In a fountain ink-well, the combination with a main body having a main chamber and a cover therefor provided with a dipopening, of an upwardly pressed feed-controller within the well normally closing, said dip-opening, a stationary member surrounding the upper end of said feed-controller and forming therewith, when the feedcontroller is depressed, a dip-recess, said surrounding member being provided with a passage affording communication between the dip-recess and the main chamber, a fountainchamber having an inlet-passage inclosing said feedecontroller, means forming one or more ducts leading from the fountainchamber to said dip-recess whereby the ink is circulated from the fountain mechanism into the dip-recess and thence through the passage into the main chamber, and a valve operating to close the inlet to the fountain chamber by back pressure of the liquid therein. Y

4. In a fountain ink-well, the combination of a main body having a main chamber, a top cover therefor provided with a dip-opening,

a fountain-chamber arranged within saidmain chamber provided with an inlet in its lower portion and having a tubular extension at its upper side extending to and surrounding said dip-opening, said fountain-chamber having a passage leading radially from the upper end of said tubular extension to said main chamber, a float having its main body arranged within said fountain-chamber and provided with an extension rising through the tubular extension of said fountain-chamber, said tubular extension having feed-ducts leading from the fountain-chamber upwardly alongside said float extension to the space above the latter, the lower surface of the body of said float being of different shape from that of the inner bottom surface of the fountain-chamber, whereby sticking of the float in its depressed position is avoided.

5. In a fountain ink-well, the combination with a main body having a main chamber and a top cover therefor provided with a dipopening, a separately-formed fountain-chamber having a bottom wall arranged within the main chamber and an inlet-opening through said bottom wall, a flat seat surrounding said inletopening with n the chamber, a gravity valve member resting upon said seat and normally closing the inlet and inletspace leading from the main chamber beneath the bottom of the fountain-chamber to the inlet-valve, a tubular extension rising from the fountain-chamber to said top closure and at its upper end surrounding the dipopening in the latter, and having a passage affording communication between the upper part of said tubular extension and the upper part of the main chamber, and a float within the fountain-chamber having an upper extension rising within the tubular extension of the fountain-cha1nber and adapted to engage the perimeter portions surrounding the dip-opening to seal the latter when the float is natant.

GUSTAV J. SENGBUSCH. Witnesses:

WALTER M. FULLER, L. F. MoOREA. 

